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-rw-r--r--third_party/lisp/trivial-garbage.nix12
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diff --git a/third_party/lisp/trivial-garbage.nix b/third_party/lisp/trivial-garbage.nix
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+# trivial-garbage provides a portable API to finalizers, weak
+# hash-tables and weak pointers
+{ pkgs, ... }:
+
+let src = builtins.fetchGit {
+  url = "https://github.com/trivial-garbage/trivial-garbage.git";
+  rev = "dbc8e35acb0176b9a14fdc1027f5ebea93435a84";
+};
+in pkgs.nix.buildLisp.library {
+  name = "trivial-garbage";
+  srcs = [ (src + "/trivial-garbage.lisp") ];
+}